{
  "manageEntity": {
    "action": "Save",
    "entityId": "2110499811",
    "entityType": "Track",
    "nonce": "0xf70d07e6770645646e20cd92538bb088fe62ee46690d5c1bba44a24006c40735",
    "signature": "0x476beb079940ccba7a60848505ae6c1815ea5a1574e1f238c91a34b48fa4e06639f2e8f57e23a4a13484cad8a9ab5255899e3bd2b31f96cc263d526fa05d9a361c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}